List of top Chemistry Questions

In base vs acid titration, at the endpoint methyl orange is present as

For the decomposition of azomethane, CH3N2CH3(g) → CH3CH3(g) + N2(g), a first-order reaction, the variation in partial pressure with time at 600 K is given as
The half-life of the reaction is ______ × 10–5s. [Nearest integer]

In the above reaction product B is:
In the above reaction product B is:
Product B is

Among the following structures, which will show the most stable enamine formation? 
(Where Me is –CH3)

[A] → [B]
Reactant Product
If formation of compound [B] follows the first order of kinetics and after 70 minutes the concentration of [A] was found to be half of its initial concentration. Then the rate constant of the reaction is x × 10–6 s–1. The value of x is _________. (Nearest Integer).
In a linear tetrapeptide (constituted with different amino acids) – (number of peptide bonds) is _____.
The boiling point of water is higher than liquid HF. The reason is that:
The metal-pair that can produce nascent hydrogen in alkaline medium is:
Avogadro's law is valid for
$1$ mL of water has $25$ drops. Let $N_A$ be the Avogadro number. What is the number of molecules present in $1$ drop of water? (Density of water = $1$ g/mL)
Hybridisation of the negative carbons in (1) and (2) are:
Hybridisation of the negative carbons
To a solution of colourless sodium salt, a solution of lead nitrate was added to have a white precipitate which dissolves in warm water and reprecipitates on cooling. Which of the following acid radical is present in the salt?
$C_6H_6(\text{liquid}) + \frac{15}{2} O_2(\text{gas}) \rightarrow 6 CO_2(\text{gas}) + 3 H_2O(\text{liquid})$ Benzene burns in oxygen according to the above equation. What is the volume of oxygen (at STP) needed for complete combustion of $39$ grams of liquid benzene?
A metal ($M$) forms two oxides. The ratio $M:O$ (by weight) in the two oxides are $25:4$ and $25:6$. The minimum value of atomic mass of $M$ is
Oxidation states of Cr in K2Cr2O7 and CrO5 are, respectively:
How many monobrominated product(s) (including stereoisomers) would form in the free radical bromination of n-butane?
What is the correct order of acidity of salicylic acid, 4-hydroxybenzoic acid, and 2,6-dihydroxybenzoic acid?
The enol form in which ethyl-3-oxobutanoate exists is
The correct order of relative stability of the given conformers of n-butane is
order of relative stability
The major product of the following reaction is $F_3C \rightarrow CH = CH_2 + HBr$
The correct order of relative stability for the given free radical is:
The product of the following hydrogenation reaction is:
The product of the following reaction is:
Which of the following would produce enantiomeric products when reacted with methyl magnesium iodide?
The correct order of acidity of the following hydra acids is: